JP2001351309A - Portable recording medium reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fast reproduce a DVD with no intervention of an OS. SOLUTION: A power switch 3 is turned on to make a device shown in Fig. 1 function as a personal computer. A power circuit 2 turns on a main breaker 4 and supplies power to all devices (5 to 12) via a main power line 15 and a secondary power line 14 to operate these devices. When a DVD reproduction switch 1 is turned on before the switch 3 is turned on, the circuit 2 cuts the power line 15 via the beaker 4 and supplies power to only the devices (8-12) among devices (5-12) via the power line 14 to display the video images of a DVD, etc., on a display 12. Under such conditions, a graphic controller 9 reproduces the image data received from a DVD drive 11 on the display 12 according to only its built-in sequence, i.e., with no intervention of an OS. As a result, the DVD can be reproduced at higher speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to reproduction of a portable recording medium in a multimedia personal computer.

[0002]

2. Description of the Related Art Heretofore, devices such as personal computers (hereinafter referred to as "multimedia personal computers").
In order to reproduce recorded audio such as a CD-ROM or video video such as a DVD, there are the following problems.

[0003] First, an OS must be started to reproduce recorded audio such as a CD-ROM or video video such as a DVD. Therefore, a CPU or a peripheral device (eg, FD interface, USB interface) is required. In other words, power consumption is large because it is necessary to supply power to the entire apparatus.

[0004] Second, in order to start playback of recorded audio such as a CD-ROM or video video such as a DVD from a state where the power of the apparatus is turned off, an initialization process of almost devices included in the apparatus is performed. This means that it took a long time to start the necessary OS, so it took a long time to start playback.

[0005] An example of a conventional technique for solving such a problem is described as a "multimedia small-sized information processing apparatus" in Japanese Patent Laid-Open No. 9-101848. This device stores a drive device for reading portable media on which digitized music information is recorded, a main power switch for turning on the device, and a self-diagnosis and initialization process executed immediately after the power is turned on. And a non-volatile memory. A mode switch for making the small information processing device function as a music reproducing device, a means for detecting the true / false state of the mode switch are provided, and a drive processing routine for controlling the drive device is stored in the nonvolatile memory. I do.
The state of the mode switch is determined at the head portion executed immediately after the power is turned on. When the state is true, the self-diagnosis and initialization of each element in the small-sized information processing device are omitted,
A drive processing routine stored in the non-volatile memory is started.

In the prior art, when the small-sized information processing apparatus is made to function only for portable media reproduction, the self-diagnosis and initialization at the time of power-on are omitted as much as possible, and the process branches to "light" processing. This is intended to eliminate the problem.

[0007]

However, in the above-mentioned prior art, even when the small-sized information processing apparatus is made to function only for portable media reproduction, the processing is performed using the BIOS stored in the ROM. There is a problem that processing time increases.

An object of the present invention is to realize a portable recording medium reproducing apparatus capable of realizing a reduction in power consumption and a shortening of a start-up time and a reduction in a processing time when a multimedia personal computer is functioned exclusively for reproducing a portable medium. Is to provide.

[0009]

SUMMARY OF THE INVENTION A portable recording medium reproducing apparatus of the present invention is a portable recording medium reproducing apparatus for a multimedia personal computer, and a medium drive means for converting recording data of the portable recording medium into reproduction data. (11),
In this multimedia personal computer, a reproduction switch means (1) for supplying power only to a device necessary for reproducing data on a portable recording medium, and a medium drive means (11) when power supply is detected. ) And a CPU (6), and a signal disconnecting means (8) for interrupting the connection between the CPU and the reproduction controller, and a reproduction controller means (9) for viewing the converted reproduced data in accordance with only a predetermined built-in sequence. I do.

[0010] The video image reproducing apparatus of the present invention is a video image reproducing apparatus for a multimedia personal computer,
A video drive (11) for converting the recording data of the video recording medium into video data, a graphic controller (9) for viewing the converted video data only in accordance with a predetermined internal sequence, and a video drive 811)
A storage controller (7) for controlling connection between the storage device and the CPU (6); a signal disconnector (8) for mediating between the video driver (11) and the storage controller (7); A main power supply line (15) for supplying power to a graphic controller (9), a storage controller and a signal disconnector (8), a video drive (11), and a storage controller (9)
And a bus (13) for connecting a sub power supply line (14) for supplying power to the signal disconnector (8) and signal lines of the CPU (6), the graphic controller (9) and the storage controller (7). A medium reproduction switch (1) that is turned on only when a video recording medium is reproduced, a power switch (3) that is turned on as an alternative to the medium reproduction switch (1), and a medium reproduction switch (1) or a power switch. When (3) is turned on, the power supply circuit (2) serving as a power supply source to the main power supply line (15) and the sub-power supply line (14), and when the turning on of the medium reproduction switch (1) is detected, the power supply circuit (2) is turned on. ) And a main disconnector (4) for disconnecting the main power supply line (15), and power is supplied to the sub power supply line (14) but power is not supplied to the main power supply line (14). In the state, the signal disconnector (8) Shutdown connection video driver (11) and the storage controller (7), also the graphic controller (9) is characterized by disconnecting the interface bus (13) internally.

Specifically, the video image reproducing apparatus according to the present invention reproduces a video image such as a DVD by supplying power to only a part of the devices without supplying power to all devices in the computer. It will be realized. The computer shown in FIG. 1 has a function generally called a personal computer. To function as a personal computer, by turning on the power switch 3, the power supply circuit 2 turns on the main disconnector 4 and turns on all devices (5 to 12) via the main power supply line 15 and the sub power supply line 14. ) Can be supplied and operated. When the DVD playback switch 1 is turned on in a state where the main power switch 3 is not turned on, the power supply circuit 2 disconnects the main power supply line 15 with the main cutting machine 4 and a part of the device through the sub power supply line 14. (8 to 12), and a video image such as a DVD is displayed on the display 12. In this state, the graphic controller 9
The video data from the DVD drive 11 is reproduced on the display 12 according to only the built-in sequence, that is, without the intervention of the OS. As a result, the speed of the reproduction process can be further increased.

[0012]

Next, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1 showing an embodiment of a portable recording medium reproducing apparatus according to the present invention, this apparatus shows a personal computer having a DVD reproducing function. A power switch 3 for turning on the power of the entire apparatus and a DVD reproduction switch 1 for turning on a part of the apparatus for reproducing a video are provided. Power switch 3 and
Only one of the DVD playback switches 1 is turned on.

The power supply circuit 2 is connected to the main power supply line 15 via the main disconnector 4 and directly to the sub power supply line 14. The main disconnector 4 is disconnected by the power supply circuit 3 when the DVD playback switch 1 is turned on. The main power supply line 15 is connected to the peripheral device 5, the CPU 6, the storage controller 7, and the signal disconnector 8. The sub power supply line 14 is connected to the signal disconnector 8, the graphic controller 9, the ROM 10, the display 12, and the DVD drive 11. The main power supply line 15 and the sub power supply line 14 are connected to the signal breaker 8, but when the main disconnector 4 is disconnected and it is detected that there is no power supply on the main power supply line 15, the DVD drive 11 The connection with the storage controller 7 is cut off. The storage controller 7 connects the DVD drive 11 to the bus 13 via the signal breaker 8.

The DVD drive 11 converts DVD data into video data, and the graphic controller 9 converts video data into video data. The graphic controller 9 has a sequence for performing this processing without the intervention of the OS. The display 12 displays video data. The ROM 10 stores initialization setting data and is connected to the graphic controller 9. The storage controller 7 guides the video data converted by the DVD drive 11 to the bus 13 and converts the data on the bus 13 to a DV.
Control for leading to the D drive 11 is performed. Bus 13
The peripheral device 5, the CPU 6, the storage controller 7, and the graphic controller 9 are interconnected.

FIG. 2 shows the power supply contents when the power switch 3 and the DVD reproduction switch 1 are turned on. When the power switch 3 is on, the main power line 15
Power is supplied from the power supply circuit 2 to both the power supply line 14 and the sub power supply line 14. As a result, all the devices constituting the portable recording medium reproducing apparatus, that is, the peripheral devices 5, the CPU
6, power is supplied to the storage controller 7, the signal disconnector 8, the graphic controller 9, the ROM 10, the DVD drive 11, and the display 12.

On the other hand, when the DVD playback switch 1 is on, power is supplied from the power supply circuit 2 to only the sub power supply line 14. As a result, the power supply to the peripheral device 5, the CPU 6, and the storage controller 7 is cut off, and the power is supplied only to the signal disconnector 8, the graphic controller 9, the ROM 10, the DVD drive 11, and the display 12. As a result, the peripheral devices 5, the CPU 6, the storage controller 7, and the graphic controller 9
The electrical connection with is disconnected.

Next, the operation of the portable recording medium reproducing apparatus shown in FIG. 1 will be described with reference to the flowchart shown in FIG. The present invention has a function generally called a personal computer.

First, in order to make this apparatus function as a personal computer, the power switch 3 is turned on. Then, the power supply circuit 2 detects this (step S1 in FIG. 3) and turns on the main disconnector 4 (step S1).
2) Supply power to all devices (step S1).
3) Enable all devices to operate. At this time, since the power is not supplied only to the sub power supply line (step S4), normal startup processing, that is, waiting for initial diagnosis and setting of initial data for all devices (step S5), requires a certain amount of time.

Next, a description will be given of a so-called "light" process for reproducing and displaying only a video image. The user
The DVD playback switch 1 is turned on, and the power switch 3 is not turned on. In this case, the power supply circuit 2 detects that the power switch 3 has not been pressed (step S1), disconnects the main disconnector 4 (step S2), and supplies power to the main power supply line 15. Instead, power is supplied to the sub power supply line 14 (step S3). When the power is supplied to the sub power supply line 14 but the power is not supplied to the main power supply line 15, the signal disconnector 8 does not connect the signal of the DVD drive 11 to the storage controller 7, Connects to the graphics controller only.

When power is supplied to the sub power supply line 14, but power is not supplied to the main power supply line 15, the graphic controller 9 switches the interface of the bus 13 in accordance with an instruction from the signal disconnector 8. It is separated internally so as not to affect the operation of the graphic controller 9. The graphic controller 9 has a ROM
10 for initialization (step S)
6). The graphic controller 9 uses the data to register the graphic controller 9 in the DVD drive 1.
1 is set to a displayable state (step S7).

When the initialization is completed, the graphic controller 9 causes the DVD drive 11 to start outputting video data (step S8). DVD drive 11 is D
The VD data is decoded and the video data is output to the graphic controller 9 (step S9). The graphic controller 9 converts the video data into display data, transfers the display data to the display 12 (step S11), and causes the display 12 to display a video image (step S11). Graphic controller 9
Has a built-in sequence for performing the above processing without the intervention of the OS.

While the above description has been made with respect to the reproduction of DVD images, the present invention is not limited to DVDs,
The present invention is also applicable to the reproduction of other portable recording media such as a ROM. In order to reproduce audio from the CD-ROM, power is supplied from the sub power supply line 14 to the CD-ROM drive and an amplifier for amplifying the output of the CD-ROM drive, and the output of the amplifier is reproduced from a speaker.

[0024]

The effect of the present invention is that the portable recording medium can be reproduced at a higher speed because the reproduction is performed without the intervention of the OS.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a portable recording medium reproducing apparatus of the present invention.

FIG. 2 is a diagram showing power supply contents when a power switch 3 and a DVD playback switch 1 are turned on.

FIG. 3 is a flowchart showing the operation of the embodiment shown in FIG. 1;

[Explanation of symbols]

 1 DVD playback switch 2 Power supply circuit 3 Power switch 4 Main disconnector 5 Peripheral device 6 CPU 7 Storage controller 8 Signal disconnector 9 Graphic controller 10 ROM 11 DVD drive 12 Display

Claims (3)

[Claims] 1. A portable recording medium reproducing apparatus for a multimedia personal computer, comprising: medium drive means for converting recording data of the portable recording medium into reproduction data; and data of the portable recording medium in the multimedia personal computer. Reproduction switch means for supplying power only to devices necessary for reproducing the data, signal disconnection means for cutting off the connection between the medium drive means and the CPU when the supply of power is detected, Reproduction controller means for viewing the converted reproduction data in accordance with only a sequence. 2. A video image reproducing apparatus for a multimedia personal computer, comprising: a video drive for converting data recorded on a video recording medium into image data; and a graphic for viewing the converted image data only in accordance with a predetermined internal sequence. A controller, a storage controller for controlling connection between the video drive and a CPU, a signal disconnector for mediating between the video driver and the storage controller, the CPU, the graphic controller, the storage controller, and the A main power supply line for supplying power to the signal disconnector; a sub-power supply line for supplying power to the video drive, the storage controller and the signal disconnector; A bus for connecting a signal line of a storage controller, a medium playback switch that is turned on only when the video recording medium is played, a power switch that is turned on as an alternative to the medium playback switch, and the medium playback switch or A power supply circuit serving as a power supply source to the main power supply line and the sub power supply line when the power supply switch is turned on, and disconnecting the power supply circuit from the main power supply line when the medium reproduction switch is turned on A signal disconnector that disconnects a connection between the video driver and the storage controller in a state in which power is supplied to the sub power line but power is not supplied to the main power line. Wherein the graphic controller internally disconnects the bus interface. . 3. The video image reproducing apparatus according to claim 2, wherein the video recording medium is a DVD.